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Finding the Fourth Proportional to 101.76, 140.62 and 94.48

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Solution

The fourth proportional to 101.76, 140.62 and 94.48 is: 130.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.76 : 140.62 = 94.48 : x
  2. Step 2: Convert to fraction form
    101.76/140.62 = 94.48/x
  3. Step 3: Cross multiply
    101.76x = 140.62 × 94.48
  4. Step 4: Simplify right side
    101.76x = 13,285.78
  5. Step 5: Solve for x
    x = 13,285.78/101.76
  6. Step 6: Final answer
    x = 130.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.